At least four people were killed in Egypt on Friday, amid Muslim Brotherhood protests over the labelling of the group as a “terrorist organization” by the military-backed interim government.

The Ministry of Health said 87 people were wounded in the clashes, which began after Friday Prayers in Cairo and at least four other cities.

The Ministry said an 18-year-old Brotherhood supporter was shot dead in the Nile Delta city of Damietta. A second man was killed in Minya, south of Cairo, and a third person was killed in the capital.

A young man was killed late on Friday, State media reported, infighting in the southern city of Aswan between security forces firing tear gas and Brotherhood supporters who burned two police cars.

Security forces detained at least 265 Brotherhood supporters, including at least 28 women, authorities said.

The Government has detained hundreds of Brotherhood members since the July 3 coup that removed President Mohammad Morsi. Leaders of the organization, as well as prominent activists, have been given long prison sentences.

The Brotherhood was declared a terrorist organization after 16 people were killed in bombing outside a police station in Mansoura on Tuesday, even though the group condemned the attack and it was claimed by an Islamist faction based in the Sinai Peninsula.

Officials have said anyone taking part in protests in support of the Brotherhood may be punished under anti-terrorism laws that provide fo up to 5 years in prison